Combination rim tool and jack



May 8, 1928.

| RENARI COMBINATION RIM TOOL AND JACK Filed March 29, 1927 INVENTOR LRen @P m @Q mwl ATTORNEY Patented May 8, 1928.

. LOUIs RENARI, or SANTA ROSA, CALIFORNIA.

, COMBINATION RIM TOOL ANnfJAOx.

Appiianqnined March as, 1927. seria'iNo. 179,297.

This invention relates to improvements in appliances for use inconnectionwithfthe operation ofmotor vehicles; My principal object is toprovide as a single unit a tool which may be eflicie'ntly used. as ajack for any purpose, such as raising or lowering a wheel of a motorvehicle for vmaking tirev changes; which maybe also used for exs pandingand contracting the usual split de-A mountable tire rims; 'and also as apowerful appliance for pulling any one element toward another. y Afurther object ofthe yinvention is to produce a simple and inexpensivedevice and yet one which will be exceedingly effective for lthepurposeLv for which it is designed. i Theseobjects I accomplish by meansof such structure and relative arrangement of parts -as will-fullyappear by a perusal of the following specification and claims. In thedrawings similar characters of reference indicate corresponding parts inthe` several views:

Fig. l is a longitudinal elevation of my improved tool as applied to asplit rim to contract the same.

" Fig. 2 is a sectionalelevation of the tool detached. y o

Fig. 3 is a view of the tool` as appliedv to expanding a rim.`

Referring now more particularly to the characters of referenceon thedrawings, the

numeral 1 denotes a barrel of tubular form having a bore 2 extendingfrom one end thereof to a point short of the other end. The outer end ofthe bore terminates in a tapped portion 8 of somewhat smaller diameterthan the bore, while thevopposite end of the barrel has a tappedhole 4eonsidertloably smaller than the tapped portion 3 and' communicatingwith the bore 2. Screwed into the portion 3 and normally |projectinginto the bore is aY hollow'screw stem hav- Ving a base pad 6 on itsouter end. Screwed into the tapped portion 4 is another screw stem 7 ofa size such as to enable it totelescope into the stem 5 and having a pad8 on its outer end. When the stems are fully telescoped into the barrelAand into `each other, the total length of the device between "the outerfaces of the opposed padsl is but little greater than that ofthe barrelitself, so that the device is very compact andy may be used inconnection with cars having balloon tires whose axleswhen the tires areHat arevs'omewhat close to the ground. Ow-

may be nearly double the length ing to the telescoping of one'stem intothe other the total length of the structure when the stemsl areseparated as far'as possible e of the jack when the stems arevcontracted.

One stem Ais threadedright-hand and the other left-hand and thev pitchof the threads is the same. Itwill vtherefore be seenthat if ,the barrel[isk rotated the stems will be moved ino'r out relative to the barrellan or polygonal sidedbore 9 inwhichis vslid-` ablethe similarly shapedhead 10 of a stein 'equal `distance simultaneously. `.In order to l1Wh'ichjis secured at its opposite endinthe I pad 6 ofthestemj 5.'lhisstem vis of such a length that will not. interfere with the fullstroke of thestems awayfrom each other. Various mechanisms may beprovided' for rotating the barrel to effect the above' movement of thestems. In the present instance I mount a bevel gear 12 on the barrelwhich engages a bevel pinion 13 which in turn is mounted in a housing 14turnably disposed about the barrelr but fixed against.V

movement longitudinally thereof. This pinion isv provided with a socketmember 15 or the like outside the housing so that a turning implement ofany character and length may be detachably applied thereto.

Projecting koutwardly from the opposite sides of the pads 6 and ^8 inlongitudinal alinement with eachV other are orihced lugs 16 to which maybe removably attached one yend of short independent chains 17, the outerY ends of'which carryhookslS. These hooks are particularly shaped Vto beengagedlwith the side flanges of a demountable rim 19, at idiametrically opposed points thereon.

In operation, for use as a jack the opposed f pads of the de-vice areengaged with the ground` and with the axle or other part of the carrespectively, anda rotative move-` ment isapplied to the pinion 13 tocause the barrel to be rotated. and the stems to be raised'or lowered asthe case may be.

When the device is used to contract a rim the stems are `first advancedsomewhat and the hooks are then attached to the rim at opposed pointsand on both sides thereof, one

pair of such hooks being disposed near 'the split S ofthe rim and ofcourse engaged with that portion of the rim which is to` be drawninwardly..y y 'Iffthenfa retractive or telescoping movement is impartedto the stems the rim will be drawn inwardly by the pressure thus appliedto the chain hooks, as will be evident. When using the tool to expandthe rim back into place I preferably 4lay a cross timber as at 20 in therim in a suitable position and rest one pad against the timber while theother pad bears against the rim at such a position that an outwardmovement of the stems will cause the rim to be forced outwardly and intoplace. By means of the chain and hook arrangement the tool may be alsoused in certain cases in place of a block and tackle structure, as willbe obvious.

The hooks are of suoli form that any desired number of links of thechain may be taken up and engaged with the hooks, so as to shorten theoperative lengths of the chainsto any desired degree.

From the foregoing description it will he readily seen that I haveproduced such a f device as substantially fulfills the objects of theinvention as set for herein.

While this specification sets forth in 4detail the present and preferredconstruction of the device, still in practice such deviations from suchdetail may be resorted to as do not form a departure from the spirit ofthe invention, as defined by the appended claims.

Having thus described my invention what I claim asnewfand useful anddesire to secure by Letters Patent is:

i. A jack including a barrel, a screw stem threaded therein from oneend, another screw stein arranged'to telescope into the inner end of thefirst named stem from the inner end and threaded into the opposite endof the barrel, the threads ou the stems being cut in opposite directionsto each` other, means for rotating the barrel, and a. stem fixed in thefirst named screw stem at its outer end and projecting lengthwise intothe last nan'ied screw stem from the inner end ythereof in slidable butnonturning engagement therewith.

2. A structure as in claim l, in which the bore inthe screw stem intowhich said fixed stom projects is larger than said fixed stem except atthe inner endof the screw stem, and the fixed stem` has a head on itsouter end movable in the larger portion ofthe bore.

In testimony whereof I affix mysignature.

LoUIs RENARI, y

